Ok. I'll try and keep this short and try not to sound like a puss.

I'm in my early 20s and lost my virginity at 15. I've had sex with a decent amount of different girls. I don't know my exact number, but a rough estimate would be high-twenties/low thirties. I've been in LTRs, spun plates, and had one night stands.

Anyways, I was seeing a HB8 about 2 months ago. She's definitely in the top 10 hottest girls I've ever slept with. We only had sex 3 times, and the relationship lasted only a week and a half. After the last time we had sex, she flaked on me twice so I cut her off. She went from being needy/double texting me, to the most extreme case of cold I've ever encountered, overnight.

This is what has been driving me crazy. After the last time we had sex, which was amazing, we spooned and passionately kissed for a little. There was this moment where we were just staring at each other and I felt this massive rush go to my head. It fucked me up. I held frame the best I could, told her that she could sleep over if she wanted, but I'm going to bed. After she left the next morning, I kept replaying that moment.

Now I've been with other girls since then, but none of them have given me a similar feeling. Nor have I ever had a feeling like that prior to her. The other thing is...I don't think about her, just that moment.

Is this still considered oneitis? Was this just the biggest dopamine rush I've ever experienced, and if so why? I don't know, but I'd be lying if I said I didn't think about it occasionally.

Could she sense that I felt this way? which I why she did a 180 overnight? I wasn't clingy, so how?